Results from the Ontario breast screening program, 1990–1995

1998 ◽  
Vol 5 (2) ◽  
pp. 73-80 ◽  
Author(s):  
A R Libstug ◽  
V Moravan ◽  
S E Aitken
Keyword(s):  
Cancer Detection ◽  
Breast Screening ◽  
Screening Programme ◽  
Screening Program ◽  
Tumour Size ◽  
Clinical Breast Examination ◽  
Nodal Status ◽  
Detection Rates ◽  
Intermediate Outcomes ◽  
Clinical Breast

Objective The Ontario breast screening program (OBSP) is a provincial breast screening programme offering two view mammography, clinical breast examination, instruction in breast self examination, and systematic two year recall to Ontario women 50 years and older. This paper presents the results of the programme's intermediate outcomes from 1990 to 1995 and compares them with recommended standards and other published programmes. Methods Programme data from a provincial screening programme in a large Canadian province were collated from 18 sites in operation between July 1990 and December 1995. Results In its first five years of operation, 215 738 screens were performed on 142 173 women. The referral rates for initial and rescreens are 13.8% and 8.6% respectively. A total of 1718 women were diagnosed with cancer, 1325 at initial screens and 393 at rescreens, resulting in cancer detection rates of 9.3 and 5.3/1000. The cancer detection rates for invasive cancers were 8.3/1000 at initial screens and 4.5/1000 at rescreens. The benign to malignant biopsy ratio was 1.5:1 at initial screens and 1.3:1 at rescreens. Of the 1358 cancers diagnosed at initial screens, 11.6% were in situ and 50.3% of invasive cancers of known size were <15 mm. For women with invasive cancer where nodal status was known, 71.3% were node negative. The proportions at rescreens were 15.7%, 60.0%, and 76.0% respectively. Conclusions While the OBSP has achieved the standards suggested by other studies and programmes during its first five years of operation, there is work to be done to increase participation and obtain more complete data on tumour size and nodal status.

Estimation of the benefit and harms of including clinical breast examination in an organized breast screening program

The Breast ◽  
2019 ◽  
Vol 43 ◽  
pp. 105-112
Author(s):  
Huan Jiang ◽  
Stephen D. Walter ◽  
Patrick Brown ◽  
Parminder Raina ◽  
Anna M. Chiarelli
Keyword(s):  
Breast Screening ◽  
Screening Program ◽  
Clinical Breast Examination ◽  
Breast Examination ◽  
Clinical Breast

Evolution of the National Breast Screening Programme in Ireland: Two-year interval analysis (2004–2013) of BreastCheck

2017 ◽  
Vol 25 (4) ◽  
pp. 191-196 ◽  
Author(s):  
Patricia E Fitzpatrick ◽  
Gráinne Greehy ◽  
Marie T Mooney ◽  
Fidelma Flanagan ◽  
Aideen Larke ◽  
...  
Keyword(s):  
Cancer Detection ◽  
Digital Mammography ◽  
Carcinoma In Situ ◽  
Breast Screening ◽  
Screening Programme ◽  
Ductal Carcinoma ◽  
Detection Rates ◽  
Breast Screening Programme ◽  
National Breast

Objective Monitoring breast screening programmes is essential to ensure quality. BreastCheck, the national breast screening programme in the Republic of Ireland, commenced screening in 2000, with full national expansion in 2007, and digital mammography introduced in 2008. We aimed to review the performance of BreastCheck from 1 January 2004 to 31 December 2013. Methods Using the customised clinical and administrative database, performance indicator data were collected from BreastCheck and compared with programme and European guideline standards. Results Over the decade, 972,236 screening examinations were performed. Uptake initially rose following national expansion, but fell in the subsequent years to <70% in 2012–2013. Following the introduction of digital mammography, initial recall rates increased from 5.2% in 2004–2005 to 8.1% in 2012–2013. Subsequent recall rates remained within the target of <3%. On average, invasive cancer detection rates were 6.6/1000 for initial and 4.5/1000 for subsequent women. Small cancer detection rates were for <15 mm 43.4% (initial women) and 51.7% (subsequent) and for ≤10 mm 24.0% (initial) and 29.5% (subsequent). Ductal carcinoma in situ detection as a percentage of all cancers averaged 21.2% for initial and 20.0% for subsequent women. The majority were intermediate or high-grade ductal carcinoma in situ. The positive predictive value was 11.9% for initial and 21.8% for subsequent women. Standardized detection ratios remained above the programme target. Conclusion Revised indicators to reflect the digital mammography era are anticipated in revised European Guidelines on breast cancer screening.

scholarly journals Results from the NHS Breast Screening Programme 1990–1993

1995 ◽  
Vol 2 (4) ◽  
pp. 186-190 ◽  
Author(s):  
S M Moss ◽  
M Michel ◽  
J Patnick ◽  
L Johns ◽  
R Blanks ◽  
...  
Keyword(s):  
Cancer Detection ◽  
Breast Screening ◽  
Detection Rate ◽  
Screening Programme ◽  
Interval Cancer ◽  
Cancer Detection Rate ◽  
Quality Assurance Programme ◽  
Detection Rates ◽  
Breast Screening Programme ◽  
Single View

Objective –To present results from the NHS breast screening programme (NHSBSP) for the three year period 1990 to 1993, and to examine the extent to which interim targets are being met. Methods –Data have been collated from all screening programmes in the United Kingdom on standard “Korner” returns, supplemented for the year 1991/92 by data from the radiology quality assurance programme. Most of the data refer to the prevalent screening round, but some data on rescreening are also available. Results –The total cancer detection rate at prevalent screens was 6·0/1000, 18% being in situ cancers; the detection rate of invasive cancers ⩽ 10 mm in diameter was 1·3/1000, but data on size were missing for 12% of cancers. Referral rates were significantly lower for programmes using' two view mammography at the prevalent screen than for those using single view, and cancer detection rates were significantly higher. For prevalent screens over the three year period, 70% of programmes had a referral rate of ≤ 7%, 87% had a benign biopsy rate of ≤ 5/1000, and 79% had a cancer detection rate of ≥ 5/1000. By contrast, only 30% of programmes appeared to meet the target detection rate of > ⩽5/1000 for invasive cancers ≤ 10 mm in diameter. Conclusions – While the majority of interim targets are being met by the NHSBSP, the rate of detection of small invasive cancers requires careful monitoring. Collection of more accurate data on size of cancers and interval cancer rates will give a better indication of progress towards the target mortality reduction.

scholarly journals A Comparison of Two View and One View Mammography in the Detection of Small Invasive Cancers : Results from the National Health Service Breast Screening Programme

1996 ◽  
Vol 3 (4) ◽  
pp. 200-203 ◽  
Author(s):  
R G Blanks ◽  
S M Moss ◽  
M G Wallis
Keyword(s):  
National Health Service ◽  
Health Service ◽  
Cancer Detection ◽  
National Health ◽  
Breast Screening ◽  
Screening Programme ◽  
Invasive Cancer ◽  
Detection Rates ◽  
Breast Screening Programme ◽  
National Health Service Breast

Objective— To examine the effect of using two view mammography in comparison with one view mammography in the detection of small (<15 mm) invasive cancers. Setting— Screening programme data from National Health Service breast screening programme (NHSBSP). Methods— Data were collated from all screening programmes in the United Kingdom on standard “Korner” returns (KC62 forms) for the screening year 1 April 1994 to 31 March 1995. The comparison of invasive cancer detection rates by programmes using one and two view mammography with indirectly age standardised invasive cancer detection rates. Results— Programmes using two views for women attending their prevalent screen (first screen) in the NHSBSP detected 3% more non-invasive/microinvasive cancers, 7% more large invasive cancers (⩽15 mm), and 42% more small invasive cancers (<15 mm) than programmes using one view mammography. Conclusions— The success of the screening programme depends largely on the ability of individual programmes to detect small invasive cancers. The results suggest that the benefit of using two view mammography is largely in the increased detection of these cancers.

scholarly journals Contribution of clinical breast exam to cancer detection in women participating in a modern screening program

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Tehillah S. Menes ◽  
Dan Coster ◽  
Daniel Coster ◽  
Shani Shenhar-Tsarfaty
Keyword(s):  
Cancer Detection ◽  
Breast Imaging ◽  
Screening Program ◽  
Insurance Coverage ◽  
Screening Mammography ◽  
Routine Screening ◽  
Breast Cancers ◽  
Detection Rates ◽  
Clinical Breast Exam ◽  
Clinical Breast

Abstract Purpose Despite the controversy surrounding the role of clinical breast exam (CBE) in modern breast cancer screening, it is widely practiced. We examined the contribution of CBE in women undergoing routine screening mammography and in women under the screening age. Methods A retrospective cohort study including all women participating in a voluntary health screening program between 2007 and 2016. All participants undergo CBE; Screening mammography is done selectively based on age, breast imaging history and insurance coverage. Data collected included demographics, risk factors, previous imaging, and findings on CBE and mammography. Cancer detection rates within 3 months of the visit were calculated separately for women undergoing routine screening mammography, and women under the screening age. Results There were 14,857 CBE completed in 8378; women; 7% were abnormal. Within 3 months of the visit, 35 breast cancers (2.4 per 1000 visits) were diagnosed. In women within the screening age who completed a mammogram less than one year prior to the visit (N = 1898), 4 cancers (2.1 cancers per 1000 visits) were diagnosed. Only one was diagnosed in a woman with an abnormal CBE, suggesting that the cancer detection rate of CBE in women undergoing regular screening is very low (0.5 per 1000 visits). In women under the screening age (45), 3 cancers (0.4 per 1000 visits) were diagnosed; all were visualized on mammography, one had an abnormal CBE. Conclusions The contribution of CBE to cancer detection in women undergoing routine screening and in women under the screening age is rare.

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